Archimedes principle's exercise :)

5 . A safety line is marked on a boat to ensure that the load carried by the boat do not exceed the limit of it capacity .
 

      *  The maximum buoyant force experienced by the boat is 17400N.
     
      *  The one who is more eligible to go in the boat is the man  with 60 kg. Because  the man will not make the boat inverted